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Finding the Fourth Proportional to 177,586.40, 266,530.80 and 72,480.80

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Solution

The fourth proportional to 177,586.40, 266,530.80 and 72,480.80 is: 108,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,586.40 : 266,530.80 = 72,480.80 : x
  2. Step 2: Convert to fraction form
    177,586.40/266,530.80 = 72,480.80/x
  3. Step 3: Cross multiply
    177,586.40x = 266,530.80 × 72,480.80
  4. Step 4: Simplify right side
    177,586.40x = 19,318,365,608.64
  5. Step 5: Solve for x
    x = 19,318,365,608.64/177,586.40
  6. Step 6: Final answer
    x = 108,782.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.